On the flat

Pierce, Julia
February 2005
Engineer (00137758);2/25/2005, Vol. 293 Issue 7669, p11
This article reports that sensors developed for Europe's space programme have been used to build a system that allows any flat surface such as a wall, window or tabletop to become interactive. Accelerometers are used in conjunction with gyroscopes to form the inertial positioning system on-board Ariane launchers. They also turn on the pyrotechnic switches that control the fueling of the boosters and are used on satellites. When a surface is tapped the accelerometer can accurately measure the sound waves produced in order to determine the location of the tap, allowing any surface to become as sensitive as the keys on a computer keyboard.


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